错误提示：Warning:mysql_fetch_array()expectsparameter

$conn=_connect("localhost","root","") or die ("mysql连接失败");
mysql__db("lsr",$conn) or die ("选择失败");
mysql_query("net name gbk");
$sql="SELECT * FROM 'important'";
$query=mysql_query($sql,$conn);
while ($row=mysql_fetch_array($query)){
echo $row[gamename];
}

mysql_query("net name gbk");
这个写错了mysql_query("set names gbk");